S D Attri and Ajit Tyagi. "CLIMATE PROFILE OF INDIA"(PDF). Indian Meteorological Department. Archived from the original(PDF) on 21 July 2011. Retrieved 9 March 2011.
S D Attri and Ajit Tyagi. "CLIMATE PROFILE OF INDIA"(PDF). Indian Meteorological Department. Archived from the original(PDF) on 21 July 2011. Retrieved 9 March 2011.